Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Temple Garden

Oath of Nissa

Mana Confluence

Terrarion

Blooming Marsh

Botanical Sanctum

Hope of Ghirapur

Mox Amber

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

Urza's Ruinous Blast

(You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Exile all nonland permanents that aren't legendary.

Hallowed Fountain

({T}: Add {W} or {U}.) As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Jace, Wielder of Mysteries

If you would draw a card while your library has no cards in it, you win the game instead. +1: Target player puts the top two cards of their library into their graveyard. Draw a card. −8: Draw seven cards. Then if your library has no cards in it, you win the game.

Teferi, Time Raveler

Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. −3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.

Kethis, the Hidden Hand

Legendary spells you cast cost {1} less to cast. Exile two legendary cards from your graveyard: Until end of turn, each legendary card in your graveyard gains "You may play this card from your graveyard."

Emry, Lurker of the Loch

This spell costs {1} less to cast for each artifact you control. When Emry, Lurker of the Loch enters the battlefield, put the top four cards of your library into your graveyard. {T}: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

Once Upon a Time

If this spell is the first spell you've cast this game, you may cast it without paying its mana cost. Look at the top five cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Oko, Thief of Crowns

+2: Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.") +1: Target artifact or creature loses all abilities and becomes a green Elk creature with base power and toughness 3/3. −5: Exchange control of target artifact or creature you control and target creature an opponent controls with power 3 or less.